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Hi, A while back Gerard Hughes started a thread on accurate card dials: Ok, so I do realize that "heliochronometer" and "card dial" are sort of mutually exclusive. I’m looking for a way to make some easy to read card dials that read in standard mean time. One dial which is both a heliochronometer and a card dial is that devised by Charles J. Merchant. The dial, an card equitorial dial, appears to be based on the Pilkington Gibbs Sol Horometer. It was described in Scientific American in March, 1964. I'm attaching a jpg which I hope scrapes under the wire for size. (I'll see if I'm able to convert the HTML into a pdf, if anyone desires a copy of the article) I've often thought that if I have the time, I'll write the DeltaCad code to generate the EoT adjustment for the Merchant dial. But if someone else has the leisure to do it first, I'll be the first to applaud! best wishes, Peter Mayer -- Peter Mayer Politics Department The University of Adelaide, AUSTRALIA 5005 Ph : +61 8 8303 5606 Fax : +61 8 8303 3443 e-mail: [EMAIL PROTECTED] CRICOS Provider Number 00123M ----------------------------------------------------------- This email message is intended only for the addressee(s) and contains information that may be confidential and/or copyright. If you are not the intended recipient please notify the sender by reply email and immediately delete this email. Use, disclosure or reproduction of this email by anyone other than the intended recipient(s) is strictly prohibited. No representation is made that this email or any attachments are free of viruses. Virus scanning is recommended and is the responsibility of the recipient. |
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